Fault-block mountains. Aerial photograph of fault- block mountains overlooking a plain along the Moab fault. These were formed when the surrounding plain collapsed on either side,leaving the mountains raised above the new level of the plain. 300 million years ago,the evaporation of an ancient sea left a salt bed covering the Colorado Plateau of what would become North America. Over time other geological deposits formed the rocks of the present day plain. These rocks are up to 1.5 kilometres thick. This has led to parts of the plain collapsing and buckling as the original salt beds weaken under the weight of the overlying rock. Photographed in Utah,USA | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Edmaier, Bernhard |
Taille de l’image : | 3541 px × 3543 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |